Diagnostic Test

VERIFY THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, record and erase DTCs.
3. Test drive the vehicle.
4. Ignition on, engine not running.
5. With the scan tool, read DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2.
  No
  - Go To 7.
(T301) SWITCHED BATTERY SOLENOID SUPPLY CIRCUIT OPEN

Fig 1: Checking Switched Battery Solenoid Supply Circuit Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off to the lock position
2. Disconnect the Transfer Case C1 Motor harness connector.
3. Disconnect the DTCM C1 harness connector.
4. Measure the resistance of the (T301) Switched Battery Solenoid Supply circuit between the Transfer Case Motor harness connector and the DTCM C1 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (T301) Switched Battery Solenoid Supply circuit for an open.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3.
(T317) TRANSFER CASE MOTOR LOCK SIGNAL CIRCUIT OPEN

Fig 2: Checking Transfer Case Motor Lock Signal Circuit Open
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (T317) Transfer Case Motor Lock Signal circuit between the Transfer Case Motor C1 harness connector and the DTCM C1 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (T317) Transfer Case Motor Lock Signal circuit for an open.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4.
(T301) SWITCHED BATTERY SOLENOID SUPPLY CIRCUIT SHORTED TO VOLTAGE

Fig 3: Checking Switched Battery Solenoid Supply Circuit Shorted To Voltage
Courtesy of CHRYSLER LLC
1. Ignition on, engine not running.
2. Measure the voltage of the (T301) Switched Battery Solenoid Supply circuit in the Transfer Case Motor harness connector.
  Is any voltage present?
  
  Yes
  - Repair the (T301) Switched Battery Solenoid Supply circuit for a short to voltage.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 5.
TRANSFER CASE MOTOR

Fig 4: Checking Transfer Case Motor
Courtesy of CHRYSLER LLC
1. Turn the ignition off to the lock position
2. Reconnect the Transfer Case Motor harness connector.
3. Measure the resistance of the (T317) Transfer Case Motor Lock Signal circuit and the (T301) Switched Battery Solenoid Supply in the DTCM C1 harness connector.
  Is the resistance greater than 10.0 Ohms?
  
  Yes
  - Replace the Transfer Case Motor in accordance with the Service Information. Refer to MOTOR, SHIFT , REMOVAL .
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  
  Go To 6.
DRIVE TRAIN CONTROL MODULE (DTCM)
1. Reconnect the DTCM C1 harness connector.
2. Ignition on, engine not running.
3. With the scan tool, erase DTCs.
4. With the scan tool, read DTCs.
  Does the DTC C1406-12-TRANSFER CASE BRAKE CONTROL - CIRCUIT SHORT TO BATTERY set?
  
  Yes
  - Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to MODULE, DRIVETRAIN CONTROL , REMOVAL .
  - Perform the DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 7.
INTERMITTENT WIRING HARNESS AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors.
3. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
4. Look for the data to change or for the DTC to reset during the wiggle test.
5. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times.
6. Look for the data to change other than as expected or for the DTC to reset.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time.